Revision history of "subtract, composition of add and negate" (Z17248)

ilgabun sonjohon: buibulere durun i radio kuwangse be sonjoho manggi enter eici enter fejergi be ana.
suhe gisun: (ne) = hanciki durun ci duibulembi, (ebisihe) = nenehe durun ci duibulembi, a= ajige kvbulin.